Use of a clinical pathway in laparoscopic gastrectomy for gastric cancer

Table 2 Demographic data for the enrolled patients n (%)

Variables		No. of patients (total n = 4800)
Sex	Male:Female	2920:1880 (60.8:39.2)
Age (yr)	mean ± SD	56.7 ± 11.7
BMI (kg/m2)	mean ± SD	23.71 ± 3.0
Anastomosis method	Intra:Extra	2345:2455 (48.9:51.1)
Resection	Distal:Total	4218:582 (87.9:12.1)
Combined OP	None:Yes	4531:269 (94.4:5.6)
Event during OP	None:Yes	4723:77 (98.4:1.6)
Number of comorbidities	0:1:2 and more	3196:1137:467 (66.6:23.7:9.7)
ASA	1:2:3	3025:1549:226 (63.0:32.3:4.7)
Previous Abd. OP history	N:Y	4057:743 (84.5:15.5)
TNM stage	1:2:3	4380:314:106 (91.3:6.5:2.2)

SD: Standard deviation; BMI: Body mass index; Intra: Intracorporeal anastomosis; Extra: Extracorporeal anastomosis; OP: Operation; ASA: American Society of Anesthesiologists; Abd: Abdominal.